The core spirit of the deepening of judicial reform comprehensively is to return the original power to the judges and prosecutors. Therefore, the judicial power operating subject will be more decentralized, and the inner supervision will be more weaken. In this situation, it is the right time to strengthen and improve the judicial supervision of all levels of People’s Congress and its standing committee. The judicial supervision of the People’s Congress is to supervise the people’s courts and procuratorates. The principal contents of the supervision is to supervise the power of judicial power, not the judicial acts. The judicial supervision should be typed as legal-supervision, work-supervision and personnel-supervision. In order to effectively improve the supervision quality and efficiency of the people’s congresses at all levels and the Standing Committee, to ensure the constitutional power be implemented correctly and completely, the legal-supervision should be deepen, the work-supervision should be normalized, and the personnel supervision should be substantialized.